100% Polyester - Top Quality You Can Count On - Thicker than general flat shoestrings Width: 5/16"(8mm) & Perfect fit for most sneakers, converse, high-tops, all shoes you like 2 Pair Pack(4 Laces) Stay tied all day long due to the strong and sturdy material 100% Satisfaction Promised: 30-day money-back guarantee for any reason Kindly Remind: the length errors within 5cm won't have any influence on its purpose.